I'm on Windows 8.1 x64, and the game crashes for me after the latest (12/22/15) update. As a side note, after the second crash (I had three in total), I did a Steam game file check and it found a 83.6 KB file missing. After that was downloaded and installed, I re-tried the game, but it nevertheless crashed again.

We are living in a statist matrix, but our normalcy bias prevents us from being aware of it.